Knee replacement surgery can walk normally after 4 weeks, the specific time to walk needs to be judged according to the recovery of the body after surgery, patients need to exercise under the guidance of the doctor after surgery. The time to walk after knee replacement surgery needs to be judged according to the body’s recovery. If the patient’s muscle strength returns to normal through rehabilitation exercises after knee replacement, most patients need to be able to walk normally in 4 weeks after surgery. On the contrary, if they do not follow the doctor’s instructions to carry out functional exercises in a timely manner after the operation, the muscles and the affected area recovered poorly, it may take a longer time to walk normally. Patients should rest more and can perform lower limb functional exercises under the doctor’s guidance. It is recommended that the functional exercises should be gradual and according to the strength of the patient. Daily activities should avoid overloading the knee joint to minimize the chance of joint wear and tear. After knee replacement surgery, you should go to the hospital for regular checkups, and the doctor will judge the exact time you can walk.